你必须相信世界的真实性和其中人们的真实性。
You have to believe in the reality of the world and the reality of the people in it.
人は、自分が幸せになるために、他人を不幸にする。
The joy of mathematics is in the struggle to understand.
When we love, we always strive to become better than we are. When we strive to become better than we are, everything around us becomes better too.